Laiyuan County minerals have been identified are metals, non-metallic minerals 43, 160 occurrence, the exploitation of a certain value.
涞源县矿产已查明的有金属、非金属矿43种,矿点160个,具有一定开采价值。
2
This paper deals with the situation of non-ferrous metal mineral resources in Hunan province and its status quo of exploitation and economic evaluation.
本文论述湖南省有色金属矿产资源的形势,开发利用现状及矿产经济评价。
3
The paper discusses the recent situation and development on the respects of products exploitation, technology layout, equipment manufacture of non-wood based panel.